Electrode and electrolytic battery



A. T. STUART. ELECTRODE AND ELECTRbLYTIC BATTERY.

APPLICATION man JULY 1, 1919.

Patented Feb.1 4, 1922.

T'Vihzeoa 52 i/ JZmm'aZe atlorzzeyo UNITED STATES Parana OFFICE.

ALEXANDER THOMAS STUART, or-TosoN'roj ONTARIO, CltNADlit, ,asslonon TO s'rum'r Enso'rRoLY'rIc CELLS, INCORPORATED, or WILMINGTON, DELA- wmm, A conronarron or DELAWARE.

ELECTRODE .uvn ELECTROLYTIC Bursar.

Specification of Letters Patent. Patented Feb 14, 1922 Application filed July 1, 1919. serial No. 807,964.

l the Dominion of Canada, have invented certain new and useful Improvements in Elee;

trodes and Electrolytic Batteries, described ,in the following specification and illustrated in the accompanyingdrawings, that form part of the same. a

to provide a form of electrode which ispar ticularly adapted for use 111 an-oxygen-liyextraordinary capacity of gas production while maintaining the maximum electrical efliciency.

exceptionally large numbers to present the maximum active surface with the minimumessential electrolytic ga a A still further object is to provide a structure which will be exceedingly compact but will allow rapid circulation of the electrolyte and free egress of the gases formed,

which will require the minimum of atten-' tion, and by means of which the cost of pro ductionwill be materially reduced.

consists in the novel construction of an electrode in the form of a thin'meta'llic strip arranged in relation to a pair of electric current distributors with its major plane sub assembling a plurality of such bipolar strips between diaphragms parallelly ar-- stantially in the direction of the flow of the current, and further 'in the novel manner of drogen generator and which will have an which the strips Figure-4 is a'diagrammatic view of a plurality of individual bi-polar strip electrodes arranged in series.

- Figure 5 is a horizontal sectional view of an oxy en-hydrogen generator illustrating the pre erred method of assembling the bipolar electrodes in series parallel the sectionbeing taken on the line 5 50f Figure 6. Flgure 6 is a detail vertical sectional view on the line 6-6 of Figure 5 of a portion of the device shown in Figure 5. The principal objects of this invention are Fig. .7, is a detail perspective view Showan electrode strip a division member r. a portionof a partition bar. Fig. Sis aface view of a frame member, and

Fig. 9 is a side elevation of a modification. a

It has been previously proposed to form electrodes for ox 'hydrogen generators by the use of a plura it of thin metal strips in ave been individually connected to electric conductors and which strips are uni-polar.

' The form "of electrode forming the new oleus of this invention is a thin metallic strip which presents the greatest active surface forthe mass of metal' The strip 1 is formed long and narrow of thin plate, or

even foil or fine wire gauze, and is placed. between electric current distributors 2 with The principal feature of the invention: I r I .tributors as possible, as illustrated in Figure its longitudinal edges as close to the disl,'thus placing the major plane of the strip in the directionot' flow of the current.

If the electrode is to be used for storage battery purposes it will be placed between diaphragms 3 arranged between the longitudinal edges of the strip, and the distributors 2, and between each pair of electrodes when more than one are employed.

When used for electrolysis of water the strip is placed asillustrated in Figure 3 and division members 4. are arranged longitudinally of'th'e strips, for the entire length thereof, thereby forming gaschambers 5 and 6 between the diaphragms 3 and the members 4. The gas chambers will be divided into small cells by those portions of the strips 1 extending from the members a to the diaphragms 3.

The bi-po'lar strips may be arranged in series of an indefinite length, each strip 1 being separated from the adjacent strip by the least possible electrolytic gap, the i liu- "girls 3 filling the-gaps betweenflt-he strips.

. A preetieal application of theinvention is', illustrated in F 1gure s,, 5 and 6 .which are diagrammatic, in that't-he' spaces between the various strips are greatly exaggerated. The

number are placedtogetherbetween: each or the strips-1" tosepz'trat'e; t-hest-rips 1 there The separating members t are of the same length as the-ist-r'rps 1 and quired distanee.

between the Strips;

1 strips L BmbIed together" to' form a composite element andthe pref bl 10,

meyfbe of any desii 'irbl'e meteriahandg as thestrips 1- are arranged in parallel :and are not. required tobe insiilnted one from: the

other, the me n-be'rs l may hoof-any mete trolyteand which will form gasatiglit joint-s 'When therequired numbernre assembled. say to a width of about 24 inches, the whole is'pluc'ed undenpressure and clamped together. The structure thus produced comprises a. pluralitylof'thin strips each of whiehgis' of considerable length. as

compared-with its width. :The strips are separated from each other by the members l-whioh extend strips. with their major surfaces opposed, and when current is supplied to one edge oi each or the entire length of the e'ny strip, it, the current, will travel toward above described, a ironies 11 and 12 the opposite edge, in the direction of the ma mtplane which are inserted metal burs 9.

In assemblingthe compositem'embers just )rovided for each memher. On opposite Sid 11. are recesses 13, 13. he recesses are of slight depth scrossthe opening inthe frame but on the walls which ultimately become the slde wulls of the casing the rece$ extends through thewnll :t's'shown in'Fig. 8.

11 with the bars hecor'n'posite member is lit'i djifi the frame engaging the recesses as shown in Fig 6. bars lie in the portions 14. 14' of the recess end extend through the side wall of the frame. The'fram'e 12 isnow' positioned over the frame 11, i being filled with paint; @emenutr the like to prevent leakage at the joint The free edges (if the strips 1 are infthe'sa me planes asthe free edgesof the builtnp-frnrn'e member 11 12.

The strips n re therefo're nrri-rn'g'ed.

of the strip or strips. The end edges of the 'eomposite'member thuscon- :structed are then formed with slots 3 into pmr of open-rectangular es of the frame element The projecting'ends of the the joint between t'he'frmnes 'l he strips 1 and members 4:, do not extend entirely across the frame fmmtop to hot- 7 tom there being in space 15 abovethe composite member and "axspe'ceflif' fbelow the same; Thebalts 9 divide these spaces, where by the frame 11 12 is divided to form two chem-beret?) end d-one on each side of the l 'transrerse centerfthereof, and each of said chambers is divided byfmenns of the strips 1 into a large number of vertical channelsextending between the 'spaces'15 and 16. As

many of theframes 11-42, as desired are pluced togetlier' face-to-face with a diel'nhragm 3"between each-frame member.

It is necessary to-pro'vide proper current;

distributors for encjl i battery, of cells, and.

at fear-l1 end of the bitttery is far-ranged set ofthin metal current-distributors. 2, cor-re spending. innumber and spacing-with the b1- are rig-idly secured-g ether'endjjn electrical Contact with-Bullish e busfbars 17- strips of. the QmPQ ItB .r'n'enibersi and the bus hairs arosnit'ably connected to an 1 electric current supply; Theqbus; bars 17. :tnd currentfdistribntorsQ, are carried in end frame members 18iea'ch composed of eshvl low -'box open' a-t one side. Thefree edges of the distributors are on the same plane-es the edges of the members-18. The members 18 aresessembled, one at each end ofthe: range of frame members;1-1*-12r and; u diaphragm 3 is positioned between the; end mmnbms and't-he adjoining frame member. Bolts 19 are nowpe-sse'd through the'walls of all 01" the frame men'ibers, the diniphrsgms.

mid the bars 9 thereby securelyfastening-the frame members together with the current distributors; and electrodes in position.

(lurrent isfed to the enddistributdrs and flows therefrom to the adjacent strips .1 through thediuphirztgms which are prefer- :Lhl 'coinposedof asbestos \fwbric; :The

strips .are rendered biepolar, infth's-t the cur.-

rent enters at one edge, being the negative edge; and tra.vellin, the width of the strip leaves at the opposite- This transmission of current, continues and positive edge.

Ill

throughout the entire length ofthe battery of cells, which m y contain any desirable number" of bipolar unite 'Hyclroge'n is generated on the negative portion of each-individual electrode strip, and oxygen isgenerated on such positive portion. These portionsare seperated'by dividing members 4 and bars 9, and thegases formed are conducted from their respective chambers-in any suitable manner.

Theindividual electrode strips in-the'oompcsite units-ere rlniform'ly positioned; consequently the strips of each successive'imit are in alignment, and there will be M1 8.pproximately uniform current flow' toeach separate and individual electrode strip, and us the strips are-of similar potential and a are pa alle it s mm t r al whether for not .the individual strips in each composthin and onaccount of the parallel arrangement, the current will be uniformly dis tributed through a great number of strips. To illustrate if there are approximately 70L) strips in each unit and these are 24 inches 2s v l igsb and 6, the casing is filled with water be Burg,

long and i of an inch wide, and a current flow of. 700 amperes is carried, each strip will carr but one ampere through a strip len th o 24 inches, consequently there will off'an ampere across its width of a} of an inch. It will also be understood that an enormous surface of metal is exposed tov the electrolytic action and polarization is practically eliminated. j I Another.eirtremelyimportant feature of thi.s inrention is that the units are remarkably easy to handle by reason of theirindependent arrangement and they do not require to be electrically connected the one with the other by any mechanical means.

When the parts are assembled as shown in suitably treated to form an electrolyte. The

level of the electrolyte may be at any point below. the top edges of the strips 1. The

electrolytemay pass through the diaphragm 3, butcannot pass the partition members 4 and 9. V When current is supplied to one current distributor it will pass through the porous diaphragms in the .electrolyte,;and through the partitions formed of the members 4 by the metallic path ,formedby the strips 1. The edges of the first strips to receive the currentwill be of negative polarity and hydrogen gas will be generated on those.

portions-of tl e strips. The gas cannot pass ..either the diaphragm 3 or the partition 4 and consequently it will rise in thespaces l between the strips at the side of the partition into the spaces above the same, and be withdrawn therefrom in any desired manner.

The current leaving the opposite edges of the strips will render those edges positive, and oxygen will be generated on these portions of the strips at that side of the partition, and will be withdrawn as before. This will continue throughout the battery.

The gas generated will be kept in separate chambers as it cannot passthrough the diaphragms, and obviously it cannot pass through the partitions 9 and 4, nor can it pass through the stri s. The current will follow the metallic pat formed by the strips and partition members, and pass in the electrolyte through the diaphragms which are pervious to the fluid.

The form of electrode shown and described is particularly ada table for oily-hydrogen gas production, bu it must be understood that the same structure of bipolar units may be utilized very eflectively in connection with other forms of electrolytic cells, and in storage battery work.

F or storage battery construction the spaces between the individual bi-pola-r electrode strips may be filled with active material of one kind upon one side of the dividing members and of another kind on the other side and they may besethorizontally to sustain the active material in position.

What I claim as my invention is 1. A bi-polar electrode comprising a metallic strip having its major plane arranged in the direction of the flow of an electric current through the electrode.

2. Aflbi-polar electrode comprising a metallic strip ofuniform cross section having its major planearranged in the direction of the flow of an electric'current through the electrode; V 1

3. A bi-polar'electrode comprising a pair of opposed electric current distributors, there being a gap between-the distributors, and a metallic strip within the gap, said 'strip havin its majorplane arranged in the diaphragms arranged between opposite edges of the metallic strip and the'current distributors. v l l ,1

A 'bi-polar electric cell' comprising a pair of opposed electric current distributors, there being a gap between the distributors, means whereby an electric current may be passed across the gap, a'metallic strip within the gap, said strip'having its major plane arranged in the direction'of the flow of the electric current between the distributors, means for separating the positive from-the negative surface of said metallic strip, and diaphragrns arranged between the edges of the metallic strip and the current distributors.

6. A bi-polar electrolytic battery comprising a pair of opposed electric current distributors, there being a gap between the distributors, means for passing an electric current across the gap, a plurality of metallic strips arranged in series within the gap and with their major planes arranged in the direction of the flow of the current between the distributors, said strips being separated the one from the other by the minimum electrolytic gap.

7. A bi-polar electrode comprising a pair of opposed electric current distributors, there being a gap between the distributors, means for passing an electric current across the gap,- aplurality of spaced metallic strips arranged in pnrallel Within the gap, means between the strips for separating the positive fron'nthenegative surface of each strip, and

di hragms-ai'ranged between the edges of sai strips and the currentrdistributors.

8. 'An electrollytic battery, comprising an I electrode-consisting of a; plurality of spaced elements arranged in. perallel ,Ia pair of opposed electric current distrib tor's each includin apllurality of spaced elements urra'nge in perallel, there being a gap between the} distributors, each element of the electrode having its major 'plane' arranged substantially in the direction ofthefi'ow of the current, said electrode being arranged 11i V serieswithin the gap between the distribu- --tors fseidielectrode being separated from the fo1'me vperellel,means whereby an electric current t li strihutors by the minimunr electrolytic gaps:

- 9-. Anelectrolytic battery,jc0mpris1ngen "-electriccurrent distributor at each end thereiofl-e flurelity of i i-Polar electrodes each diet thin metalllc' strips arranged in may be pi ssedi through the electrodes and distributors, partitions, between suid strips spacing them epei't and separating said stn sinto OSl tlVQ end negat ve surfaces, sai j-electro es being arranged 1n series, and

, diefiliragms of porous-di' electric material 'je'cent electrode seid" notches,', and} means between-each ofseid electrodes and between the electric current distributors and the ed- 10, A lectrode,comprisinge plurality ofv long',"; narrow,: thin inetellicistrips nrranged'with" their me 1or' surfaces parallel,

members of sepsretin esser width arranged betlireen-t e eforesaidstripsmidway of their width and extending'othe length thereof, said stri'ps an'dmembers having notches in their length, an electrode disbosed within thegep zinc separated fro ehcHdiSttibutor by a narrow electrolytic gap, a porous d aphragm in each electrolytic 'gap and fillmg the same,

partition being substantially perallel with the diaphrsgrns and disposedbetween the same whereby the seidcesingis dividedinto a plurality of chambers on eachsideof the electrode. v

12. 'An electrolytic bettery, conigrising 'u.

rectanguluricasing, a currentfdis'tributor' sit schew of the casing (and Within the some 7 said distributors comprising; pluralityqi a partition'oneachside of'the electrode, said thin, narrow'strips spaced apart and ye'rtically arranged with the thinfed es of one distributordir'ected toward thoseo the other dis-. tributor' and in substantialelignrnentthere withya plurality-of electrodes Within the otherf and withfthe distributors saohfelec trodecornprising e plurality of thirnnejrrow casing and disposed betweenltliedistributors, the seid'electrod'es beinginzseries with each strips spacedgepart end yerticelly arranged in the same manner as"'are' ,the distributor strips, there being: zi, short, electrolytic gap between the'ele'ctrodes; end between theend electrodes of the series and'the distributors the strips of electrodebeing errsnged side by sid efwith' the tli i-ned ge s .op ds'edto the thin edges ofthedistributors, th ing partitions between the stripszof each electrode, said partitions extendingerticnlly the entire length of the strips, e1 porous ere'be-' diaphragm in eechclectr'ol ticfgup, Where l by e lurelity of gastig t ch'eziibers are rm :0 1. chamber beingb u e adlacem' Strips, p'artition'gandth an.

hrs-gin, end en'electrolyte filling'the chamliers' whereby when an electric-current is caused to tre've 'sje the battery froinone dis tributor to the other, theelectrolyte' v'villbe decor'nposed'and hydrogenfwill be generated in the chambers at one side of the phrtitions, and oxygen willbe generated in the chem- Mars on the opposite'sides ofthep'artitions.

ALEXANDER T oMA-s STIC'JART. 

